Put down the 10-K filings and the stock screeners. It's time to take a break from the traditional methods of generating investment ideas. Instead, let the crowd do it for you.

From hedge funds to individual investors, scores of market participants are turning to social media to figure out which stocks are worth watching. It's a concept that's known as "crowdsourcing," and it uses the masses to identify emerging trends in the market.

Crowdsourcing has long been a popular tool for the advertising industry, but it also makes a lot of sense as an investment tool. After all, the market is completely driven by the supply and demand, so it can be valuable to see what names are trending among the crowd.

While some fund managers are already trying to leverage social media resources like Twitter to find algorithmic trading opportunities, for most investors, crowdsourcing works best as a starting point for investors who want a starting point in their analysis.

Today, we'll leverage the power of the crowd to take a look at some of the most active stocks on the market.

Hertz Global Holdings

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  • Nearest Resistance: $10
  • Nearest Support: $9
  • Catalyst: Technical Setup, Sympathy Move

Up first is Hertz Global Holdings (HTZ) - Get Report , a stock that's seeing abnormal trading volume thanks to a technical setup and big price action elsewhere in the equipment rental industry. Hertz is down 2.9% this afternoon, following some notable downgrades in the rentals industry. But while peers are getting the analyst attention, Hertz is the one getting investor attention. As of this writing, Hertz is one of the highest-volume stocks on the NYSE today.

Technically speaking, Hertz's price action has looked rough lately. The firm has sold off 44% in the last six months alone, and shares are testing a key support level at $9 today. If shares materially violate that $9 line in the sand, look out below.

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Molson Coors Brewing 

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  • Nearest Resistance: $90
  • Nearest Support: $85
  • Catalyst: Secondary Offering

Beer brewer Molson Coors Brewing (TAP) - Get Report  is seeing big volume this afternoon, following the pricing of a 27.2 million share secondary offering. Molson Coors' secondary priced at $86.50, a strong showing in a market that's been good to alcoholic beverage companies. The end result is $2.3 billion in net proceeds from the offering.

While strong demand for Molson Coors' secondary is certainly a good thing for shareholders, this stock is starting to look "toppy" in the long-term. Shares have spent the last several months forming a textbook head and shoulders top; the sell signal comes on a violation of support at $85. Molson Coors isn't a sell until shares fail to catch a bid above that $85 price tag.

Gilead Sciences

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  • Nearest Resistance: $87.50
  • Nearest Support: N/A
  • Catalyst: CEO Departure, Merck Competition

Gilead Sciences (GILD) - Get Report  is getting hammered 5% lower on big volume this afternoon, following news that CEO John Martin is departing the company, as well as FDA approval of a rival hepatitis C drug from Merck (MRK) - Get Report . Martin will remain executive chairman at Gilead, while COO John Milligan will take the chief executive role at the $123 billion biopharmaceutical giant.

Meanwhile, the approval of Zepatier for chronic hepatitis C is scaring away investors who fear that Gilead will lose its market position in the face of the new competition. Shares are violating a key support level at $87.59 this afternoon, a move that opens the doors for a meaningful decline in February. Caveat emptor.

Disclosure: This article is commentary by an independent contributor. At the time of publication, the author held no positions in the stocks mentioned.